ad lib
baseness
deficiency
disability
disablement
disqualification
extemporaneousness
failure
falling short
faultiness
fewness
imbecility
imperfection
improvisation
inability
inadeptness
inadequacy
inadequateness
inaptitude
inaptness
inattentiveness
incapability
incapacitation
incapacity
incompetency
indexterity
ineffectiveness
ineffectuality
inefficiency
ineptitude
ineptness
infancy
inferiority
insufficiency
insufficientness
lack of preparation
legal incapacity
littleness
maladjustment
maladroitness
meanness
mediocrity
minority
none to spare
nonfulfillment
nonpreparation
nonpreparedness
nonsatisfaction
unfitness
competency
incompentency
arrogance
corruption
cowardice
dishonesty
immorality
ingratitude
injustice
irresponsibility
laziness
misconduct
mismanagement
negligence
stupidity